<em>Kidney stones can stay in the kidney or travel down the urinary tract. A small stone may pass on its own, causing little or no pain. A larger stone may get stuck along the urinary tract. When a stone gets stuck it can block the flow of urine this causes severe pain and bleeding.</em>
B. An increase in knowledge as well as written books
Answer:
B
Explanation:
Divers who dive at any time from sunset to sunrise must carry a diver's light visible when above the water for a distance of 150 feet.